Drain-valve for radiators.



PATENTED MAYB, 1906.

F. A SIMONDS.

DRAIN VALVE FOR RADIATORS.

APPLICATION FILED HAYS, 1904. RENEWED $EPT. l1, 1905.

51 mmwtoz UNITED s-TATEs PATENT OFFICE.

FRANKA. SIMONDS, OF GRAND RAPIDS, MICHIGAN, ASSIGNOR OF ONE- THIRD TO ,CLARA 'D. BURNOP, OF ALBANY, NEW YORK.

DRAIN-VALVE FOR RADlATORS- I No. 820,146.

Specification of Letters Patent.

Eatenteu May 8, 1906.

Application filed May 6, 1904. Renewed September 11, 1905. Serial No. 278,034.

lowing to be a full, clear, and exact descripwithout disturbin in the valve-seat.

tion of the invention, such as ena'b e others skilled in the art to which it appertains to make and use the same.

My invention relates to improvements in drain-valves for radiators; and its objeetis to provide a main valve that can be opened or closed in the usual way, as occaslon requires,

drainage-valve an that will simultaneously open the main valve and drainage-valve and in combination with a small adjustable drainage-valve and a strainer for the same; to prov de means for clearing the strainer of obstructions; to adapt the device for use in connection with radiators used in a vacuum system of steam-heating, and to rovide the device with various new and use 1 features, hereinafter more fully described, and particularly pointed out in the claims.

My deviceconsists, essentially, of the combination of a valve adapted to be opened and closed in the usual 'way, an adjustable supplementary valve to rovide a constant vent, a strainer for'said va ve, and in the combination and arran ement of the various features, as will hereinaiter more fully appear by reference to the accompanying drawings, in which Figure 1 is an elevation of a device embodying my invention; Fig. 2, a vertical section of the same on the line 2 2 of Fig. 1, and

Fig. 3 a horizontal section of the same on the line 3 3 of Figs. 1 and 2-.

Like numerals refer to the figures.

1 represents thebody of the valve, somewhat resembling a globe-valve, but havin the valve-seat 2 in substantially the plane 0 the lower side of the pipe connections, whereby the valve will drain the pipe leading tothe same, and a chamber 11 to receive the strainer when the main valve is raised. 4

3 is the main valve for closing the opening At a suitable distance above the valve is located a disk 4 of substantially the same diameter as the valve, and to like parts in all of the adjustment of the this diskis attached the stem 10, extending upward therefrom and rovided with the usual screw-thread and g and 13. Extending from the disk 4 to the valve 3 and surrounding the same is a tubular screen 6, consisting of woven wire, perforated sheet metal, or ot er suitable material and securely attached to the disk and valve at its res ective ends; The valve and disk are a so 'urther connected by a tubular member 5, having a numberof vertical slots therein and open at 'the bottom through the central opening of ig1and'9 and adjusted by asuitable key.

Above the disk 4 is the chamber 11, into which the screen and disk may be raised by the stem 10, and the bottom of this chamber closely surrounds the screen, as at 12, where by the screen is freed from any obstructions when it rises into the chamber. A chamber 11 is provided above the screw to receive the same.

In operation the main valve is closed when using a vacuum system and the valve 7 adjusted open only enough to drain off the condensed water and maintain tion in the radiator to whic t e valveis attached. The strainer retains anything likely to obstruct this small opening of the valve 7, and in the event that it becomes clogged thereby the'main valve may be fully opened and the strainer will rise into the c amber 11 and be cleaned by the closefitting bottom 12 of this chamber, and when the main valve is again closed the valve 7 will remain roperly adjusted and will be fully opened by opening the main valve. the event that the vacuum system-is not used the main valve can be fully opened and the usual gravity drainage thus secured.

I have shown a preferred arrangement of the valves and screen; but it is obvious that the screen may be dispensed with without affecting the operation of the valves and that the valves may be diflerently arranged without departing from my invention.

Having thus fully described my invention, what I claim, and desire to secure by Letters Patent, is

1. In a valve, a main valve having a cenro er circulatral opening, means for opening and closing valve and attached thereto.

said main valve, and an independently-adjustable valve to partially or Wholly close the opening in the main valve when the .main valveis seated and independently supported bythe case.

ing a central opening, an auxiliary valve to partially or Wholly close said opening when the main valve is seated, and independe tly adjustable, awdisk connected to the main valve, a valve-stem attached to the disk, and a tubular screen surrounding the disk and 3. The combinatiouof a valvc-b ody, a

valve therein andhaving a central ening,

- an auxiliary valve to partially or Whol y closesaid opening when thenmain val-ve isseatd,

and-independently adjustable, adisk above; the main valve and connected thereto; a tuw bular screen surrounding the disk and valve and attached thereto, a chamber in the body to receive the screen and closely surrounding the same, and means for moving the screen into the chamber. e

4. The combination of a valve-body having a seat op osite the'lower side of the inletopening, ava ve having a central opening anden agin g' 'said seat, an auxiliary valve to part1a lyor Wholly close said opening when the main valve is seated and independently adjustable, a disk above the valve and connected thereto, a screen surrounding the disk andvalve and attached thereto, a stem 'connectedto thefdisk to raise and lower the disk together With the screen andvalve, and a chamber above the body to receive the disk 'andscreen.

. Q'SQ In'ayalve, a body having inlet and exit 2. The combination of a main valve 'havolpenln anda seat opposite the lower side of t e in et-openmg, a valve to engage said seat andhavlng a central opening, a valve to partially orwholly close sald central'opening Whenthe main valve is seated, oppositelyprojecting stems attached to'the respectivevalves, and arranged in axial alinement, a screw-thread and gland for each stem, and means for rotating said stems.

6. In a valve, a body having an upwardlyfacing seat, a main valve to engage said seat and-having acentral opening and a downfWardly-facing seat, an upwardly-projecting stem on the valve and extending through the top of the body, a drain-valve to engage the seat in the main valve and partlally or wholly close the said opening when the main valve is seated, a downwardly-projecting 'stem om the drain-valve and extending 

